I've knitted a cami top with i-cord straps. I picked up three stitches on the inside front of the top, my straps are the right length, but i can't work out the best way to attach them at the back. I've tried a couple of ways but it seems loose and messy. Whats the best way to attach the three stitches at the end of the i-cord to the top?

I tried sewing it and that looked terrible. I tried knitting each stitch together with a purl bump on the top, but that looked clumsy. What I want is something that looks as nice and neat as the front. I've done google and craftster searches but I can't find an answer..